38 Spring Flora of Ohio. 



Mol-lu -go ver-ti-cil-la'-ta h. Indian Chickweed ; Carpet Weed. — Leaves 

 spatulate, clustered in whorls at the joints. 



XXII. Order POR-TU-LA-CA'-CE->E. PURSLANE FAMILY.— Herbs; 



leaves more or less succulent, entire ; flowers regular, sepals usually 

 fewer than the 5 petals or sometimes none. 



Stamens 5, plants upright, not fleshy Claytonia. 1 



Stamens 7-20, plants fleshy Portulaca. 2 



1. Genus CLAY-TO'-NI-A. — Sepals 2, distinct, persistent, stamens 5, 

 style 3-cleft; simple stems from a deep tuber. 



Clay-to'-ni-a vir-gin'-i-ca L. Spring Beauty. — Leaves linear-lanceo- 

 late," elongated, .3-6 in. long. 



Clay-to'-ni-a car-o-li-ni-a'-na Mx. Broad-leaved Spring Beauty.— Leaves 



spatulate oblong, or oval-lanceolate, 1-2 in. long. 



2. Genus POR-TU-LA'-CA.— Calyx 2-cleft, the tube cohering with 

 the ovar}' below; style mostly 3-8 parted, stems prostrate, fleshy. 



Por-tu-la'ca o-le-ra'-ce-a L. Purslane. — Leaves obovate or wedge- 

 shaped; beginning to bloom in June. 



XXIII. Order CAR-Y-0-PHYL-LA-CE-yE. PINK FAMILY.— Herbs, the 



stems usually swollen at the joints; leaves opposite, entire; stamens 

 distinct. 



Flowers with petals (a). 



Flowers apctalous e . 

 a. Sepals distinct or nearly so b . 

 a. Sepals united into a tube or cup Silinif. 1 



b. Stipules none (c" . 



b. Stipules present (d^. 



0. Petals 2-cleft or none, styles mostly 3 (rarely 4 or .5 pod short Alsine. 2 



c. Petals notched or 2-cleft, stj-les 5, pod cylindrical Ccraslium. 3 



c. Petals entire, styles usually 3, pod short Arenaria. 4 



d. Styles 5, pod 5-valved, leaves whorled Spergula. 5 



d. Styles .", pod 3-valved, leaves opposite Tissa. 6 



e. Styles usually 4, pod many-seeded (c, above). 



e. Stigmas 2, sessile, pod 1-seeded Anrchia. 7 



1. Genus SI-LE'-NE. — Calyx 5-toothed, styles 3, rarely 4, petals 

 crowned with a scale at the base of the blade. 



